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Abstract
Depolarized rotovibrational Raman spectra of orthobaric liquid HCl are studied to obtain information on the molecular reorientational motion. Second order spectral moments are obtained and the presence of collision induced scattering is discussed, while fourth spectral moments are used to obtain values of mean square intermolecular torques. Orientational correlation functions and correlation times are studied and a comparison with other experimental data is made. The liquid is dominated by strong anisotropic forces at low temperature and is collision limited on approaching the critical point. A comparison is made with the quasi-lattice random jump model and with generalized hydrodynamics and it is found that a fair rotational coherence is necessary to explain the viscosity dependence of the correlation times below 250 K.
Work supported by: Gruppo Nazionale Struttura della Materia del C.N.R.
Work supported by: Gruppo Nazionale Struttura della Materia del C.N.R.
Notes
Work supported by: Gruppo Nazionale Struttura della Materia del C.N.R.